English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/17399
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Citado 0 veces en Web of Knowledge®  |  Ver citas en Google académico
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Título

A comparison between seasonal changes in soil water storage and penetration resistance under conventional and conservation tillage systems in Aragón

AutorLópez Sánchez, María Victoria ; Arrúe Ugarte, José Luis ; Sánchez-Girón, V.
Palabras claveReduced tillage
No-tillage
Dryland cropping
Soil water content
Soil strength
Fecha de publicaciónjul-1996
EditorElsevier
CitaciónSoil and Tillage Research, Volume 37, Issue 4, July 1996, Pages 251-271
ResumenLow and extremely variable precipitations limit dryland crop production in the semi-arid areas of Aragón (NE Spain). These areas are also affected by high annual rates of topsoil losses by both wind and water erosion. A long-term experiment to determine the feasibility of conservation tillage in the main winter barley production areas of Aragón was initiated in 1989 at four locations, three on loam to silt loam soils (Xerollic Calciorthid) and one on a silty clay loam (Fluventic Ustochrept), receiving between 300 and 600 mm of average annual rainfall. In this study, we compared, under both continuous cropping and cereal-fallow rotation, the effects of conventional tillage (mouldboard plough) and two conservation tillage systems, reduced tillage (chisel plough) and no-tillage, on soil water content and penetration resistance during the first two growing seasons. Whereas reduced and conventionally tilled treatments generally had similar soil water content during the experimental period, the effects of no-tillage were inconsistent. No-tilled plots had from 26% less to 17% more stored soil water (0–80 cm) than conventional tilled plots at the beginning of the growing season. In contrast to the conventional and reduced tillage treatments, penetration resistances were between 2 and 4 MPa after sowing in most of the plough layer (0–40 cm) under no-tillage at all sites. Fallow efficiencies in moisture storage in the cereal-fallow rotation, when compared with the continuous cropping system, ranged from −8.7 to 12%. The highest efficiencies were recorded when the rainfall in the months close to primary tillage exceeded 100 mm. Since this event is very unlikely, long fallowing (9–10 months) appears to be an inefficient practice for water conservation under both conventional and conservation management. Our results suggest that, up to now, only reduced tillage could replace conventional tillage without adverse effects on soil water content and penetration resistance in the dryland cereal-growing areas of Aragón.
DescripciónThe definitive version is available at: http://www.sciencedirect.com/science/journal/01671987
Versión del editorhttp://dx.doi.org/10.1016/0167-1987(96)01011-2
URIhttp://hdl.handle.net/10261/17399
DOI10.1016/0167-1987(96)01011-2
ISSN0167-1987
Aparece en las colecciones: (EEAD) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
Lopez_MV_SoilTillRes_1996.pdf194,43 kBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 



NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.